[PATCH] D96278: [clang][cli] Extract FileSystem and Migrator options parsing/generation

[Jan Svoboda via Phabricator via cfe-commits]

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This patch splits out the last two option groups (`Filesystem` and `Migrator`) into their own `Parse`/`Generate` functions.

This effectively removes the need for `parseSimpleArgs` and marshalling block in `CompilerInvocation::generateCC1CommandLine`.

The two new `Parse`/`Generate` functions are not part of the round-trip, because they contain no custom code and the very next patch starts round-tripping the whole `CompilerInvocation`.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D96278

Files:
  clang/include/clang/Driver/Options.td
  clang/include/clang/Frontend/CompilerInvocation.h
  clang/lib/Frontend/CompilerInvocation.cpp

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